Rolling door



Aug. 12, 1947- w. MPWADDELL 2,425,497

ROLLING D003 Filed March 3, 1945 //v vs/vron.

WILLIAM MALCOLM WA 00:11

Patented Aug. 12, 1947 ROLLING noon William Malcolm Waddell, WestVancouver, British Columbia, Canada Application March 3, 1945, SerialNo. 580,746

3 Claims.

My invention relates to improvements in rolling doors, the object ofwhich is to provide a structure which is capable of being made of sheetmetal or plastics.

One of the disadvantagesof rolling doors such as the interlocking typeis that to substitute a new slat for a worn or damaged one, it isnecessary to dismantle the door and slide the slats longitudinally forthe entire width of the door, which generally precludes the possibilityof a repair being made without removal from its place of suspension. Theinvention here described can be similarly repaired by simply removingone guide and drawing the defective slat rearwardly and substantiallyparallel to the plane of the door. A further object of the invention isto provide a door in which the joints are so formed as to be tightagainst wind and rain.

The invention contemplates a structure made up of slats each having aconcave and a convex edge, which mate with corresponding parts ofadjacent slats to form a continuous hinge joint, as

-wil1 be more fully described in the following specification and shownin the accompanying drawings, in which:

Fig. 1 is a perspective view of a portion of the door as seen from theinside.

Fig. 2 is a sectional detail view of a side roller.

Fig. 3 is a detail sectional View of a modified nut and bolt structurefor hingedly fastening the slats together.

In the drawings like characters of reference indicate correspondingparts in each figure.

The door, generally indicated by the numeral I, is made up of slats 2which consist of a web or straight medial portion 3 having an inwardlybent substantially semi-cylindrical bead 4 on one edge and an outwardlybent bead 5, to be referred to hereinafter as an upper bead 4 and alower bead 5 respectively.

The upper bead 4 is so formed as to define a transversely arcuate rib 6which projects beyond the outer face 'I of the medial portion 3 of theslats, when the door is in extended position as shown in Figure 1 andthe curvature of the upper bead is preferably somewhat in excess of 180degrees so as to define a throat 9 slightly less than the innerdimension of said bead, so as to permit a round rod 1 I of the samediameter as the inner diameter of the upper bead to be sprung into saidupper bead if desired. The upper bead is provided at predeterminedintervals of its length with transverse slots l2, the lower bead isprovided at correlated intervals with apertures 13 and the rod I l' isprovided with threaded openings I4, see Figure 2, into which bolts 16are inserted. The heads 11 of these bolts [6 are screwed down intocontact with the lower bead 5, by this means the lower bead of one slat2 is held in rocking contact with the. upper bead 4 of the slat nextbelow between the rod H and the head I! of the bolt [6.

The lowermost slat of a door is preferably provided with a channel stripH! which is attached thereto by rivets, spot welding or other suitablemeans.

In order to provide that the door may run freely in side or jambchannels, not shown, without chaffing the faces of the slats 2, Iprovide at opposite ends of certain of the rods a roller 2| which is ofgreater radius than the lower bead 5. These rollers are recessed intothe edge of the door which is cut away as at 22 and 23 and are eachsupported on the shanks of a bolt 25 ex tended into the outer end of therod I I to which it is attached. The bolt 25 is preferably held againstturning by a set pin 26.

In the modification shown in Figure 3, the bolts [6 are driven intoshort strips or nuts 28 which are formed of sheet metal in the form of achannel having a web 29 and flanges 30, which flanges are inwardlycurved until their edges 3| are close enough to be both engaged by thethreads of the bolt [6 as shown. The web 29 of each nut is tapped as at32 to receive the thread of the bolt. When the bolt is suitablytightened up to its nut the edges 3i of the flanges 20 are drawn towardseach other, thus gripping the thread and coacting with the tappedopening 29 to form a lock nut, thus preventing any tendency of the boltsto become slack. By virtue of the pressure between the nut 28 and theupper bead being almost entirely applied in close proximity to theopening through which the bolt passes, there is no tendency intightening the bolt to distort the bead and impair its free rockingmovement within the lower bead 5 of the slat next above.

It will be obvious that the door, as shown, could be used for transverseopening and closing movement as well as for vertical movement.

What I claim as my invention is:

1. A rolling door comprising a plurality of slats arranged in edge toedge relation, each of said slats having a web and curved upper andlower beads extending from the margins of said web, the curved upperbead of one slat forming a rocking contact with-the lower curved bead ofthe next adjacent slat, one of said contacting beads being provided withspaced transverse slots and connecting means extending through saidslots and into the contacting curved bead.

2. A rolling door comprising a plurality of slats arrangedin edge toedge relation, each of said slats having a web and curved upper andlower beads extending from the margins of said-web, the curved upperbead of one slat forming a rocking contact with the lower curved bead ofthe next adjacent slat, a portion of the curved upper next adjacentslat, a rod adapted to be seated in the upper curvedbead, said beadshaving mated openings at intervals of their length, and bolts extendedthrough said openings into the rod and rockingly connecting contactingbeads together. 7

WILLIAM MALCOLM WADDELL.

' REFERENCES CITED The following references are of record in the file ofthis patent:

beads extending from the margins of said web,

the curved upper bead of one slat forming a rocking contact with thelower curved bead of the UNITED STATES PATENTS Number Name a Date1,888,162 Eklund Nov. 15, 1932 2,293,306 Pilcher Aug. 18, 1942 1,643,074Lavagnino Sept. 20, 1927 2,099,408 Packert Nov. 16, 1937 1,917,811Richardson July 11, 1933

